Excited State Dynamics of Isolated 6‐ and 8‐Hydroxyquinoline Molecules - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue ChemPhysChem Année : 2020

Excited State Dynamics of Isolated 6‐ and 8‐Hydroxyquinoline Molecules

Résumé

The photoinduced dynamics of isolated n‐hydroxyquinoline (nHQ) molecules (n=6,8) was investigated in femtosecond pump‐probe experiments. A qualitative difference was found between 8HQ and 6HQ. After an initial rapid decay corresponding to the departure of the initial wavepacket out of the Franck‐Condon region of the excitation, the 8HQ probe signal decays to zero in 0.37 ps whereas a much longer time constant of 10.4 ps is observed in 6HQ. This interrogates on the role played by the intramolecular H‐bond N HO which is at play the 8HQ molecule. Ab‐initio were performed at the MCSCF/aug‐cc‐pVDZ level on the 8HQ molecule to help the discussion. A complex energy landscape was found, which includes a conical intersection.
Fichier principal
Vignette du fichier
Poizat_HQ_S2_03_with_corrections.pdf (5.35 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-03012500 , version 1 (24-11-2021)

Identifiants

Citer

Jean‐michel Mestdagh, Lionel Poisson. Excited State Dynamics of Isolated 6‐ and 8‐Hydroxyquinoline Molecules. ChemPhysChem, 2020, 21 (22), pp.2605-2613. ⟨10.1002/cphc.202000626⟩. ⟨hal-03012500⟩
23 Consultations
48 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More